Suspension Enhancement for 2017 Thor Axis 25.3
Updated 09/02/2025 | Published 06/26/2025
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Question:
Hi I have a 2017 thor axis 25.3 and i would like a suspension upgrade that will soften the ride. Any suggestions
asked by: Kenneth R
Expert Reply:
Hi Kenneth; it looks like your 2017 Thor Axis 25.3 is built on the E-Series chassis. However, I can't determine if it is the E-350 or 450 since different sources list both. The Thor brochure only says it is an E-series so you will need to identify it. There are a lot of restrictions for Thor motorhome models which makes the best solution air bags.
If it is the E-350 with dual rear wheels (looked like it had dual wheels in photos) you need the # F2061. If you have the 450 you need the # F22ZR. The air bags are fully adjustable and will help smooth out your ride while keeping you level. I also recommend adding an air compressor like the Air Lift WirelessAIR # AL74000. This will allow you to adjust the pressure no matter where you go. It also allows for side to side leveling which is nice for slide-outs and heavy kitchens that can throw you off.
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Product Page this Question was Asked From
Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Firestone
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Robin H.
9/2/2025
Hi Kenneth, did you find out if your Thor Axis is on the E-350 or E-450 chassis and try out the air bags? I’d love to know how they worked for you, as your experience could help others looking to improve their ride.